Справочные данные LE - Этикетки Аверьянова Л. В.

FLORA OF VIETNAM
Asclepiadaceae
Hoya vangviengiensis Rodda & Simonsson

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Herbaceous vine 2-3 m long on exposed rocks. Flowers buds white with pink. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 058 (HN, L, LE01058091, E01067161). Det.: M. Rodda 11.10.2019.

FLORA OF VIETNAM
Primulaceae
Lysimachia insignis Hemsl.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Terrestrial and lithophytic herb on shady rocky slope. Flowers yellow. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 057 (HN, LE01067160, LE01058090).

FLORA OF VIETNAM
Orchidaceae
Cheirostylis takeoi (Hayata) Schltr.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Lithophytic herb on exposed mossy rocks. Sepals olive-greenish, petals and lip white. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 056 (HN, LE01048912).

FLORA OF VIETNAM
Orchidaceae
Goodyera procera (Ker Gawl.) Hook.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Terrestrial and lithophytic herb in wet open place. Flowers white. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 055 (HN, LE01054075).

FLORA OF VIETNAM
Orchidaceae
Eria corneri Rchb.f.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Lithophytic herb on shady mossy rocks on cliff. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 054 (HN, LE01054074).

FLORA OF VIETNAM
Orchidaceae
Cheirostylis yunnanensis Rolfe

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Lithophytic herb on exposed mossy rocks. Flowers white with green tween spot at the center of lip. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 053 (HN, LE01048911, LE01054073).

FLORA OF VIETNAM
Urticaceae
Elatostema xichouense W.T. Wang

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Terrestrial and lithophytic herb in shady steep slope. Flowers light greenish. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 052 (HN, LE01054040).

FLORA OF VIETNAM
Loranthaceae
Macrosolen bibracteolatus Danser

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Parasitic shrub in canopy of small tree. Fruits red, juicy. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 051 (HN, LE01054038, LE01054039).

FLORA OF VIETNAM
Ericaceae
Vaccinium tonkinense Dop

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Creeping tuberiferous lithophytic and epiphytic undershrub 0.5 m long on mossy exposed rocks. Flowers white. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 050 (HN, LE01054037).

FLORA OF VIETNAM
Araceae
Arisaema victoriae V.D. Nguyen

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic tuberiferous herb in shady rocky place. Petiole and peduncle olive green-white tessellated, spathe light green with white base and center. No female flowers, male light yellowish, inflorescence axis light green. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 049 (HN, LE01058089, LE01067159).

FLORA OF VIETNAM
Orchidaceae
Bulbophyllum longibrachiatum Z.H. Tsi

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Creeping lithophytic herb on exposed mossy rocks, or occasionally epiphyte on mossy rocks near mountain top. Leaves purple-violet below. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 048 (HN, LE01058088, LE01066685).

FLORA OF VIETNAM
Orchidaceae
Eria stricta Lindl.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Clustering lithophytic herb on exposed mossy rocks. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 047 (HN, LE01054071, LE01054072).

FLORA OF VIETNAM
Polygalaceae
Polygala wattersii Hance

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Shrub 1.5-2 m tall on mossy exposed rocks, flowers light greenish with purple. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 046 (HN, LE01054036).

FLORA OF VIETNAM
Orchidaceae
Eria rhomboidalis Tang & F.T. Wang

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Creeping lithophyte on shady cliff and occasionally epiphyte near the mountain top. Sepals and petals dull pink, lip white with pink apex and yellow center. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 045 (HN, LE01054070).

FLORA OF VIETNAM
Gesneriaceae
Lysionotus oblongifolius W.T. Wang

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic herb to 1 m tall among shady rocks. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 044 (HN, LE01058087, LE01067158).

FLORA OF VIETNAM
Araceae
Arisaema victoriae V.D. Nguyen

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic tuberiferous herb in shady rocky place. Petiole and peduncle olive green-white tessellated, spathe light green with white base and center. Female flowers green. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 043 (HN, LE01058086, LE01067157).

FLORA OF VIETNAM
Ericaceae
Vaccinium chapaense Merr.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Small lithophytic shrub to 1.5 m tall on mossy rocks on mountain top. Flower buds white. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 042 (HN, LE01067039, LE01058085).

FLORA OF VIETNAM
Podocarpaceae
Podocarpus annamiensis N.E. Gray

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Treelet 2-3 m tall near mountain top. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 041 (HN, LE01067156, LE01058084 – photo).

FLORA OF VIETNAM
Pinaceae
Pinus wangii Hu & W.C. Cheng

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Tree to 20 m tall. Very rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 040 (HN, LE01067155, LE01058083 – photo).

FLORA OF VIETNAM
Orchidaceae
Liparis mannii Rchb.f.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic herb on open mossy rocks on mountain top. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 039 (HN, LE01066684, LE01058082 – photo).

FLORA OF VIETNAM
Orchidaceae
Paphiopedilum micranthum Tang & F.T. Wang

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic rosulate herb in shady place. Leaves dark / light green tessellated above, purple finely spotted below. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 038 (HN, LE01054069).

FLORA OF VIETNAM
Orchidaceae
Oberonia ensiformis (Sm.) Lindl.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic herb on vertical shady cliff. Old flowers yellowish. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 037 (HN, LE01066683, LE01054067).

FLORA OF VIETNAM
Araceae
Arisaema victoriae V.D. Nguyen

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial and lithophytic tuberiferous herb in shady rocky place. Petiole and peduncle olive green-white tessellated, spathe light green with white base and center. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 036 (HN, LE01058081, LE01067154).

FLORA OF VIETNAM
Urticaceae
Pilea penninervis C.J. Chen

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic erect herb to 1 m tall on exposed mossy rocks on mountain tops. Flowers whitish. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 035 (HN, LE01054035).

FLORA OF VIETNAM
Pittosporaceae
Pittosporum glabratum Lindl.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Small shrub to 2 m tall on exposed mossy rocks on mountain tops. Fruits dull greenish. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 034 (HN, LE01054032, LE01054033, LE01054034).

FLORA OF VIETNAM
Apiaceae
Xyloselinum vietnamense Pimenov & Kljuykov

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic undershrub to 0.5 m tall on exposed mossy rocks on mountain tops. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 033 (HN, LE01058080, LE01067153).

FLORA OF VIETNAM
Clusiaceae
Garcinia paucinervis Chun & F.C.How

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Tree to 15 m tall on mountain top and mountain slopes. Young leaves reddish, flowers buds light yellow. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 032 (HN, LE01054030, LE01054031).

FLORA OF VIETNAM
Orchidaceae
Epigeneium chapaense Gagnep.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Creeping epiphyte on mossy tree. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 031 (HN, LE01054066).

FLORA OF VIETNAM
Gesneriaceae
Calcareoboea coccinea C.Y. Wu

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic rosulate herb on shady mossy cliff. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 030 (HN, LE01054029).

FLORA OF VIETNAM
Orchidaceae
Renanthera vietnamensis Aver. & R. Rice

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Epiphyte on mossy tree. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 029 (HN, LE01054065).

FLORA OF VIETNAM
Orchidaceae
Cleisostoma striatum (Rchb.f.) N.E. Br.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Epiphyte on mossy tree. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 028 (HN, LE01054068).

FLORA OF VIETNAM
Orchidaceae
Coelogyne dolichopoda Aver. & K.S. Khang

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Creeping lithophytic vine to 1.5 m long with large erect pseudobulbs. Flowers yellowish. Locally very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 027 (holotype – LE01050357, isotype – HN, LE01054028, LE01050470, LE01066682).

FLORA OF VIETNAM
Asteraceae
Synotis cappa (Buch.-Ham. ex D.Don) C.Jeffrey & Y.L.Chen

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Herbaceous vine on exposed mossy rocks. Flowers yellow. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 026 (HN, LE01058079, LE01067152). Det.: A. Sennikov 12.09.2019, Senecio sp.? Det.: I. Illarionova 17.10.2019.

FLORA OF VIETNAM
Fabaceae
Ormosia integrifolia Aver., sp. nov.**

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Treelet or shrub 2-3 m tall on steep slopes. Flowers white. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 025 (holotype – HN, isotypes – LE01066990, LE01067174, LE01058078 – photo). From close O. simplicifolia Merr. & L. Chen (having also simple leaves) this plan differs in distinctly petiolate, narrowly ovate, acute leaves with distinct 3 veins (vs. leaves shortly petiolate, oblong lanceolate, acuminate, with one main vein and pinnate venation) and short inflorecence less than 3 cm long (vs. inflorescence 6–10 cm long).

FLORA OF VIETNAM
Taxaceae
Taxus chinensis Roxb.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Treelet 3-4 m tall on steep slopes near mountain top. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 024 (HN, LE01067173).

FLORA OF VIETNAM
Begoniaceae
Begonia cavaleriei H. Lév.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic herb on mossy vertical rocks. Leaves and petioles green, flowers pink, anthers yellow. Very common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 023 (HN, LE01058077, LE01067172).

FLORA OF VIETNAM
Myrsinaceae
Myrsine semiserrata Wall.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Small shrub in mountain top. Fruits purple. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 022 (HN, LE01058076, LE01067171). Det.: Yang Yi 18.09.2019.

FLORA OF VIETNAM
Ericaceae
Vaccinium pseudobullatum W.P. Fang & Z.H. Pan*

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic climbing or creeping shrub to 5 m long with stem to 10 cm in diam. on very steep rather open slope. Flowers purple, young leaves bright glossy reddish-pink. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 021 (HN, LE01054025, LE01054026, LE01067170).

FLORA OF VIETNAM
Sabiaceae
Sabia swinhoei Hemsl.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic shrub on mountain top. Flowers pale dull yellowish. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 020 (HN, LE01054027).

FLORA OF VIETNAM
Rubiaceae
Canthium sp.?

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Small lithophytic shrub on mountain top. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 019 (HN, LE01054023, LE01054024).

FLORA OF VIETNAM
Ericaceae
Rhododendron sp. 1

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic shrub on mountain top. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 018 (HN, LE01058075, LE01067089).

FLORA OF VIETNAM
Rubiaceae
Ophiorrhiza sp. 2

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Terrestrial erect herb to 1 m tall in rather shady place. Inflorescence rachis and flower buds pink. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 017 (HN, LE01067084).

FLORA OF VIETNAM
Sapotaceae
Sinosideroxylon wightianum (Hook. & Arn.) Aubrév.?

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Small tree 4-5 m tall on mountain top. Flowers buds light yellowish-white. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 016 (HN, LE01067083).

FLORA OF VIETNAM
Rubiaceae
Ophiorrhiza sp. 1

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Terrestrial erect herb to 0.5 m tall in shady places. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 015 (HN, LE01067085).

FLORA OF VIETNAM
Lamiaceae
Scutellaria sichourensis C.Y. Wu & H.W. Li

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Lithophytic rosulate herb on mossy exposed rocks, flowers dark blue-violet. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 014 (HN).

FLORA OF VIETNAM
Capparidaceae?
Stixis sp.?

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Lithophytic climbing shrub with stems 3-4 m long in rather open place. Flowers light yellowish-green. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 013 (HN, LE01054019, LE01054020).

FLORA OF VIETNAM
Lamiaceae
Scutellaria sichourensis C.Y. Wu & H.W. Li

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Terrestrial and lithophytic erect herb to 1 m tall in rather open place. Flowers purple violet. Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 012 (HN, LE01067082, LE01058074).

FLORA OF VIETNAM
Cornaceae
Cornus chinensis Wangerin?

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Shrub or treelet 3-4 m tall on rather open place, flowers light brownish to greenish. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 011 (HN, LE01054017, LE01054018).

FLORA OF VIETNAM
Convallariaceae
Polygonatum mengtzense F.T. Wang & Tang

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Epiphytic and lithophytic herb in mossy places. Flowers white, Occasional. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 010 (HN, LE01054016).

FLORA OF VIETNAM
Convallariaceae
Ophiopogon caulescens Backer

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Clustering lithophytic and terrestrial herb in rather open places. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 009 (HN, LE01054015).